Vulnerability Description
In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/med-united/epa4all/releases/tag/2026-05-20
- https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh
- https://www.machinespirits.com/advisory/aa49f0
FAQ
What is CVE-2026-48021?
CVE-2026-48021 is a vulnerability with a CVSS score of 9.1 (CRITICAL). In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain th...
How severe is CVE-2026-48021?
CVE-2026-48021 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-48021?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.